Crossword Genius

Copyist, having removed margins, limits data form (8)

Ross

I believe the answer is:

imitator

I'm a little stuck... Click here to teach me more about this clue!

'copyist' is the definition.
(thesaurus)

I don't understand how the remainder of the clue works.

Can you help me to learn more?

(Other definitions for imitator that I've seen before include "Someone copying the behaviour of another" , "Copycat" , "follower" , "A trio, Tim, is a mimic" , "parrot" .)

I've seen this clue in The Telegraph.
Want a hint initially instead of a full solution? Install my app